What a messed up movie (spoilers)
Joshua is a little sociopath, that kid needed to see a therapist badly.
Watching the video he made while his parents were asleep so he could go in and get his baby sister to cry was creepy.
The dog dying, you know that little creep had something to do with it along with the animals in the classroom. Then mimics his dad who's devastated his dog is dead, because he obviously doesn't feel emotions the way normal people do.
He convinces his mentally ill mother to play 'hide and seek' with the intention of taking his sister and hiding with her to drive her even crazier. Then acting like nothing is wrong when the dad comes back home.
Then he kills his grandma! Insanity. He gains her trust after nearly rolling his sister down the stairs at the museum and then causes her to fall down the stairs herself. He didn't show any emotion until he saw his dad looking.
He convinces the child psychologist that he's being abused and that he's a scared little boy..which is totally not the case.
He cons his dad into sleeping with him by hurting himself so his dad thinks someone hurts him.
The dad obviously loved him and cared about him, his mom was to mentally ill to show she loved him.
This is just an overall messed up movie. I don't feel an ounce of pity for Joshua.
You can call me 'Mayor Chapstick.'